Airbag device for vehicle
AssigneeAutoliv Development AB
InventorsRyota Ishigaki, Yumi Shiga
Life of this patent
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Abstract
An airbag cushion of a vehicle airbag device has a bottom surface into which the inflator is inserted, a restraining surface on the occupant side, a side surface connecting the bottom surface and the restraining surface, a recess part formed in a prescribed range in the center of the restraining surface and recessed toward the bottom surface side, and one or more tethers stretched between the recess part and the bottom surface. The recess part is formed by being pulled toward the bottom surface side by the tether during expansion and deployment. The airbag cushion further has folds and restraining parts formed along the imaginary line on the inner wall of the recess part during inflation and deployment.
Claims17
A vehicle airbag device, containing an airbag cushion that is inflated and deployed between a structure in a vehicle cabin and an occupant seated in a seat in the event of an emergency, and an inflator that is installed on the structure, the airbag cushion comprising:
- a bottom surface into which the inflator is inserted;
- a restraining surface on an occupant side;
- a side surface connecting the bottom surface and the restraining surface;
- a recess part formed in a prescribed range at a center of the restraining surface recessed toward the bottom surface, the recess part comprising:
- an inlet on the occupant side;
- a middle bottom part on a bottom surface side;
- and
- an intermediate part formed between the inlet and the middle bottom part, wherein the intermediate part is narrower than the inlet and the middle bottom part;
- and
- one or more tethers extending between the recess part and the bottom surface;
- wherein
- the recess part is pulled toward the bottom surface by the tether during the inflation and deployment,
- the airbag cushion further comprising:
- a plurality of folds formed on an inner wall of the recess part during inflation and deployment;
- and
- a plurality of restraining parts formed radially so as to divide the inner wall in an inner circumferential direction by the plurality of folds during inflation and deployment.
A vehicle airbag device, containing an airbag cushion that is inflated and deployed between a structure in a vehicle cabin and an occupant seated in a seat in the event of an emergency, and an inflator that is installed on the structure, the airbag cushion comprising:
- a bottom surface into which the inflator is inserted;
- a restraining surface on an occupant side;
- a side surface connecting the bottom surface and the restraining surface;
- a recess part formed in a prescribed range at a center of the restraining surface recessed toward the bottom surface;
- and
- one or more tethers extending between the recess part and the bottom surface;
- wherein
- the recess part is pulled toward the bottom surface by the tether during the inflation and deployment,
- the airbag cushion further comprising:
- a plurality of folds formed on an inner wall of the recess part during inflation and deployment;
- and
- a plurality of restraining parts formed radially so as to divide the inner wall in an inner circumferential direction by the plurality of folds during inflation and deployment,
- wherein
- a range extending from the side surface of the airbag cushion to at least a portion of the restraining surface is formed by a prescribed side panel;
- the side panel includes a plurality of subpanels divided in the circumferential direction of the side surface;
- each of the plurality of subpanels contains:
- a pair of side edges joined to adjacent subpanels;
- a first edge on the restraining surface side;
- and
- a second edge on a bottom surface side;
- and
- the pair of side edges are joined to adjacent subpanels by sewing along an imaginary line connecting the geometric center of the inflator and the center of the head of the occupant during inflation and deployment of the airbag cushion.
Dependencies are inferred from the claim text.